Motor-vehicle.



J. W. SUNDERLAND.

MOTOR VEHIGLB.

APPLICATION run we. as, 1907.

. 965,605. Patented July 26, 1910.

5 SHEETS-SHEET 1.

J. W. SUNDERLAND. uo'ron VBHIGLB.

v 965,605 APPLICATION FILED AUG. 28, 1907- 5 SHEETS-SHEET 2.

. 575 M r i J. .W. SUNDERLAN'D.

MOTOR VEHICLE.

APPLIOATION FILED mm. 26,1907.

.mmm Jy 26, 19W.

6 EKEEITIL-BHEET a.

J. W. SUNDERLAND.

MOTOR VEHICLE.

AYPLIOATIOH FILED AUG. B6. 1907.

WWW July 26, m0.

l5 BHEBTB-BHEET 47..

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.1 .3 3 Wjmdtrlcuw J. W. SUNDERLAND.

mp'roa VEHICLE. APPLIUATION FILED AUG. 26, 1907.

'Pmnm July 26,1910.

I To all whom it may concern:

UNITED STATES PATENT OFFICE.

JESSE sUNnEnLANn, or OAK PARK; rumors, AssIGNon To THE T. J. TrtonrMANUFACTURING COMPANY, or CORVALLIS, OREGON, A CORPORATION or OREGON.

MOTOR-VEHICLE.

oeaeos;

Be it known that I, JEssEfW. SUNDERLAND,

a citizen of the United States, residing at Oak Park, in. the county ofCook and State of Illinois, have invented a new and useful Improvementin Motor-Vehicles, of which the f lllowin'g is a specification.

M imvention pertains particularly to selfpibpeuea tr motor-Vehiclescarry' ing heavy loads; and my primary object is to provide amotor-vehicle," of the character indicated, of improved generalconstruction. In said construction, provision is made for the employmentof both the front and rear Wheels for traction purposes, and a featureof importance is the provision of steering and power-trans1nissi0nmechanisms so re lated that the rear traction-wheels-will beautomatically maintained disconnected from the 'motor while the fronttraction-wheels are traveling in a direction substantially at rightangles to the longitudinal axis of the vehicle, as where it is desiredto turn the machine from a street-car track or to remove the machinefrom a difficult OSltlOII where a straight pull would not su ce for thepur- 'pose.

The invention, in -its preferred embodiment, is illustrated i theaccompanying drawings.

It may be preliminarily stated that in this construction there areemployed :4 front traction-wheels which support a wheel-frame equippedat its front and rear portions with longitudinal trunnions; a circle, orturntable, supported on said trunnions and equipped with guides in whichmove guideblocks carried by the front axle which extends through andoscillates with the front wheel-frame; a main frame having its front endanti frictionally mounted on said circle to permit free turning of thecircle about a vertical axis, for steering purposes; a vertical shaft atthe axis of said circle and geared to a longitudinal shaft journaled inthe front wheelframe coaxial with the trunnions thereof, which shaft isgeared to Specification of Letters Patent. Application fil ed August 26,1907.

Patented July as, rain. Serial No. 390,098.

either one of which may be thrown into engagement with a bevel-gear onthe front end of said crank-shaft; a T-shape foot lever for shiftingsaid sleeve and the bevel-gears carried thereby a worm on saidtransverse shaft meshing with a worm-wheel carried by a verticallyisposed shaft which is located ad acent the periphery of said circle andequ1pped with a gear meshing with teeth -w1th which said circle is.equipped; a hand- ,said' divided shaft; automatic controlling means forsaid clutch, controlled by cams carried by said circle; a pair ofclutches controlling the transmission from the engineshaft to the frontsection of said dividedshaft; and a hand-lever formoving said lastnamedclutches simultaneously in either direction, whereby either one of saidclutches may be operativelyconnected with the en gine-shaft, it beingunderstood that said clutches both occupy normally a neutral position.It will thusbe understood that the rear traction-wheels act with thefront traction-wheels normally for propelling purposes, except when thefront wheels are steered so as to head sharply at an angle to thelongitudinal axis of the vehicle, when the clutch especially controllingthe rear traction-wheels automatically disconnects the rear section ofsaid divided shaft from the front section thereof, thereby preventingpower from being transmitted to the rear traction-wheels at a time wheninjury might result from such application of power. Of course, it, willbeunde'rstood that both engine-shaft clutches may occupy the neutralposition while the engine is employed to turn the circle to bring thefront wheels cross-wise of the longitudinal axis of the machine; or-allof the traction-vvheels may be kept in operation while the engine is atthe same time operating to turn the circle 105, for ordinary steeringvpurposes, where the for ordinary steering purposes, as frequentlycharacter of the road is such as to make it desirable to employpower-steering means may happen where the road is either soft or rough.

side-elevational view of a motor-vehicle constructed in accordance withmy invention; Fig. 2, a broken longitudinal sectional view taken asindicated at line 2' of Fig. 3; Fig.

3,- ayiew of the machinepartly in plan and partly section, with theload-platform of the machine removed; Fig. 4, a longitudinal'sectionalview;.Fig. 5, a transverse section taken at line 5 of Fig/3; 6, a

detail view ofa foot-lever employedln con-' nection with thepower-operated steering mechanism; Fig. 7, a sectional view taken asindicated at line 7 of Fig. 3; Fig. 8, a sectional view taken asindicated'atline 8 of Fig. 3; Fig. 9', a view similar to Fig. 3, showinga modified construction in which additional supporting wheels forthe'vehicleare employed, and Fig; 10, a broken sectional view takenas'indicated at line 10 of v Fig. 1.

In the constructionillustrated;A represents the main frame of themachine; B, a pair of rear traction-wheels supporting the rear ortionofthe main frame; C, a pair of ront traction-wheels which support afront traction-wheel frame C G a circle, or turn-table supported 'at'itsfront and rear portions upon trunnions C with which the wheel-frame O isequipped at its front and rear portions, the front portion of the mainframe being anti-frictionally mounted upon thecircle C to permitsteering of the machine; D, a vertical shaft co-axialwith the axis ofthe circle C and journaled in a standard 0 with which the circleC isequipped journaled in the front wheel-frame O and co-axial with thetrunnions of said wheelframe, the shaft D being actuated by .the

shaft D through the medium of bevel-gears d; D a transverse shaftjournaled in the front wheel----f1 'ame;-C and connected, by bevel-gearsd, with the shaft D D pin ions carried by the shaft D and meshing withthe gea r wheels D with which the frgnt traction-wheels C are equipped;E, a

mti't'or mounted on a sub-frame, or cradle, E -carried by the main frameand centrally located with relation to-the vehicle, said nioto' r havinga 10 divided shaftqo'ur'naled in the main ame [and comprising a frontsection 'F and a rear section-F F means forcommuni'cating motion fromthe engine-shaft to the front shaft-section F in a directlon to propel,the vehicle fbrwardly;- F, means forcommunicating motion-from the.engineshaft to the fronts haft section F .ina direction to 7 fear?traction-wheels may In the dr awingsFigure 1 represents a J D, a.horizontal shaft ngitudinally disposed crank-shaft E F, alongitudinally-disgosed.

pro el the vehicle rearwardly; F, automatica y-controlledclutch-mechanism for coupling-the rear shaft-section F to the frontshaft-section F whereby the be automatically disconnected fromjthe motorwhen the front traction-wheels are turned sharply at an angle to thelongitudinal axis of the machine; F, a transverse shaft journaled in themain frame and equipped with pinions F meshing with gearsF with whichthe rear traction-'wheels B are equipped; F,

bevel-gears connecting the rear shaft-section F with the shaft F F,engine shaft clutches controlling the power-transmission meansF, F, saidclutches occupying normally a neutral position and being capable ofbeing shifted simultaneously in either direction by lever-mechanism Fconnected by a link F with 2 hand-lever F; G, a

vertically-disposed shaft journaled in a bearing G and connected at itslower end by bevel-gears gwith-the front end of the front shaft-section'F; G (Figs. 4 and 10) a chain serving to transmit'motion from a wheel Gon the upper end of the shaft G to a wheel G on the upper endof theshaft D,= said chain being contained in a housin G; H, atransversely-dis. d worm-shaft located adjacent to the rout end of theengine-shaft and equipped with a worm H meshing with a worm-wheel H on avertically-disposed shaft H which is equipped at its upper end with 'atoothed wheel H- ineshing with teeth with which the circle, orturn-table, C is rovided; H :1 shiftable sleeve on the sha H'equippedwith bevelgears' H, H", between which is located a bevel-gear H? withwhich the front end of the engine-shaft is equipped; H, a lever sci-"- gto shift the sleeve H, said lever H being operated by a T-shapedfoot-lever H; H, an inclined. shaft connected by the bevel-gears H withthe worm-shaft H and 'by universal connection H with a vertical shaftcarrying a hand-wheel H, and'I, cams carried by ada ted to automaticallydisconnect the rear sh'a sectionF from the front shaft-section F therebyto deprive thecrear tract-ionwheels of power when the front wheels areturned sharply from a direct course.

The frame A preferably comprises side- -inembers a, a of channel form,the bottom of each channel being cut away at the rear porthe circle, ,orturn table, and

tion thereof to accommodate the rear traction-wheels; cross-members a,a, 4: connectingsaid side-members; forward extensions form members(11,11 standards a? carried by such extensions and by the cross-membera;

a extending forwardly from the channel-' portion of its length, r0 ers amounted 13 season therein and adapted to bear against the periphery ofthe circle G a seat-platform a comprising a member having its rearportion curved downwardly and connected with the cross-member a of theframe and having its lateral portions supported on the'standards,

a; a seat a mounted on said platform; and a removable load-platform asupported on the rearportion of the main frame and r0- vided withhousings a for the rear traction- 'wheels; each of the channel-formframemembers 9, a may be built up oflstructural fiat steel,'1ncluding aninner member a" and an outer member at, spaced to receive thereartraction-wheels between them. Each outer member a has a removablesection a carried byabar a which is removably secured by bolts a" to theadjacent frame-members. The wheels B are journaled on tubular spindles2) whose ends extend through the bars.-

a, at, a, being confined in place by removable headed screws b Thetubular spin dles are provided with oil-ducts b and at each wheel anoil-cup b 'is connected withand the rear frame-members a, wherebyshifting of the platform. is avoided. As shown 1n Flg. 3, the forwardextensions a of. the .main frame are connected with the vfrontcross-member a by brace-bars a.

As appears from Figs. 3, land 7, the fronttraction-wheels are journaledon a comparatively short axle c which supports the front wheel-frame Cand whose ends are equipped with bea'ringblocks 0 movable inverticallydisposed guides c with avvhich the circle, for turn-table, Cis equipped. Between the upper ends of the bearing-blocks 0 and stops 0provided at theupper ends of the guides a are confined springs whichyieldingly resist the tilting of the wheel-frameC on its trunnions. Thewheel-frame C is of the rectangular form shown. It compriseslongitudinal side-members a, front and'rear cross-members 0" which carrythe trunnions C and a channel-form intermediate longitudinal member 0 inwhich are provided the bearings a for the shaft D The ends of the axle 0project past the outer side-members 0 of the frame C and the wheels 0are journaled thereon between the frame-mem bers "0 and thebearing-blocks 0 The bevel gears (1 permit oscillationofthe wheelframe 0on its 'trunnions, as will be understood.

The turn-table C com rises a circular steel band c having teet andmeshing .with the teeth of the wheel H and an inscribed rectangularframe 0 secured at its corners to thecircular band 0".

the frame 0 are firmly connected with the band by cross-members 0 Therectangular frame 0 is'of suflicient size to accommodate within it thewheel-frame C and-the wheels G flanking the same. The guidesc arevcarried by the side-members of the rectangular framec The front portionof the main frame A is equipped with rollers c which engage the upperand lower edges of the steel band 0 thereby supporting the front end ofthe main frame, and, as noted, the rollers a on the'front end of themain frame bear against the outer periphery of the steel band 0 It willnow be understood that the front wheel-frame may tilt with relation tothe circle C and hence o cuttherein 7 The central portions of; theside-members of with relation to the main frame, and that the circle Cma turn freely in thefront end of the main rameabout a vertical axis forsteering purposes; and it will be further .understood that power may betransmitted freely to the front wheels, regardless of the tilting of thefront wheel-frame and regard less of the angular position of the front'wheel-frame in the steering operation. It may be added that thestandardc in which the shaft D is journal'ed comprises a central tubular member0 'a horizontal longitudinal member 0 joined centrally tothe lowerportion of said tubular member, and inclined members 0 connecting theupper end of the tubular member 0 with the extremities of thelongitudinal member 0 and wlth the front and rear cross-members of therectangular frame 0 It will thus be seen that there'is provided atriangularly-braced structure affording abearing for the shaft D whichis amply strong for its purpose. The arrangement of the shaft D and themeans for communicating power therefrom to the front traction-wheelswill be understood without further descri tion.

The motor E may be 0 any approve 115 kind. It is shown as an uprlghtengine whose. longitudinally-disposed shaft extends to the front andrear of the enginecylinders, the clutches F being located near oppositeends of the "shaft and operated. in the usual manner to connect thegearin F or the gearing F to the shaft, at wil It is understood that theclutch-members of the engine-shaft may turn 'idly thereon when notthrown to the operative position. The shaft F extends parallel with the,engine-shaft and is located at 'one side of the engine-shaft. Theclutch-mechanism F comprises a clutch-member) adapted to connect'therear shaft-section F? to-the front I shaft-section E a spring i normallymain taining said clutch in the operative position, and a bell-crankclutch-shifting lever having its long arm extending forwardly to aposition adjacent to one of the side-members of the rectangular frame ofthe circle C and equipped in the front and rear of the adjacent member,01 respectively with rollers f ff, adapted to be engaged by the cams Iwhen the circle is turned from a direct course to a course nearly atright angles to the longitudinal axis of the machine. It will beunderstood, of course, that the arrangementmay be varied to cause theauto matic disconnection of the rear tractionwheels from the motor tjobe effected at any desired angular relation of the turn-table and to bemaintained disconnected until the turn-table is returned to a positionapproaching the direct course for the front wheels. Also the lever 7 maybe actuatedoby hand, if desired.

The transmission of power from the shaft G to the shaft D may beaccomplished by any suitable transmission-means. transmission means ofimproved construction is now available on the market for such purposeand answers the purpose admirably.

As indicated, the shaft H may be operated either by power to steer themachine, by shifting the sleeve H to bring either the bevel-gear H orthe bevel-gear H into ongagement with the bevel-gear H according to thedirection in which it is desired to turn the turn-table; or the machinemay be .construction the shaft D is shortened corsteered by hand byoperating the shaft H through the medium of the shaft H and thehand-wl'ieel H The cams I may be suitably mounted on the circle .0 inany desired manner. As shown, they are located at the front andrearportions of the circle adjacent to the bearings for the trunnions ofthefront wheel-frame. They may be designed to effectdisconnection of therear tractionwheels from the motor when the turntable is turned through.any desired number of degrees.

In the construction illustrated in Fig. 9, provision is made forjournaling the front traction-wheels C in the frame C between theside-members and the intermediate member 0 of said frame, and additionalsupporting-wheels C are journaled on the 2X e 0 outside of theframe-members 0 the wheels Ct being without gearing. In thisrespondingly. A pair of additional supporting-Wheels B is provided forthe rear portion of the machine, said wheels being journaled upon ashaft B which extends through'the tubular spindles 6 upon which thewheels B are journaled. The wheels B are Without gearing, and serve, inconnection with the wheels C, to adapt the machine to travel upon softground. At the Chainsame time, the arrangement is such as not tointerfere with the facility of steering or turning the machine.

It may be remarked that in practice differential gearing will beemployed to permit relative movement between the front traction-wheelsand also between the rear tractionwheels, the shafts D and F beingdivided for this purpose. For simplicity of illustration, these shaftsare shown as continuous shafts.

The operation will be readily understood from the foregoing detaileddescription. The engine-shaft may operate continuously without operatingeither the front or rear traction-wheels or the steering-mechanism. Vhenit is desired to propel the machine forwardly the clutch-members F arethrust rearwardly through the medium of the lever F", thereby throwingthe front clutch-member F into operative engagement with theengine-shaft and communicating motion to the front shaft-section Fwhence it is transmitted through the shaft G, chain Gr and shaft D tothe front traction-wheels, and through the clutch f to the rearshaftsection F and thence to the rear tractionwheels, the clutch F beingnormally operatively connected with the front shaft-section F and rear.shaft-section F While the traction-wheels are thus operating, themachine may be steered either by hand or by power. It may be steered byhand by operating the worm-shaft H through the medium of the shaft H andhand-wheel H or it may be operated by power by shifting the sleeve Hthrough the medium of the foot-lever H The motion of the machine may bereversed by shifting the clutch-members F forwardly, thereby bringingthe rearmost one of said clutch-members into operative engagement with.the engine-shaft.

If desired, clutch-members F may be left in a neutral position while thepower of the engine is employed to turn the steeringmechanism,

The. foregoing detailed description has been given for clearness ofunderstanding only, and no undue limitation is to be understoodtherefrom.

What I regard as new, and desire to secure by Letters Patent, is

1. In a self-propelled vehicle the combination with a pair of fronttraction-Wheels, a pair of rear traction-wheels, and steering mechanism,of a shaftgeared to said front traction-wheels, a shaft geared to bothrear t'raction-wheels, a motor, means for communicating motion from saidmotor to sa d shafts, a clutch interposed between said motor and saidsecond-named shaft, and automatic clutch-releasing means operative toeffect release of said clutch and thereby disconnect both reartraction-wheels after said front traction-wheels have been turned from adirect course through a predetermined angle. a p 2. Ina self-propelledvehicle, the combination with the front and rear tractionwheels thereofand steering-mechanism, of a shaft grind to a fronttraction-wheel, amotor, means for communicating motion from e motor to said shaft ineither direction, shaft 'gearedto a rear traction-wheel, m .a c tchnormally connecting said shafts,

a automatic clutch-retracting means 'dep ndent for its action upon thedirection in hich the front wheels are steered with relation to thelongitudinal axis of the vehicle,

for" the purpose set forth.

to retract said clutch when the circlefis turned to a given angleposition'with relation to the longitudinal axis of themachine.

4. In a self-propelled vehicle, .the'combination of afronttraction-wheel, a circle supported through'the med1um thereof, amam frame having its front end supported on said circle, reartractionwheels supporting the rear portion of the main ;fr

located at one side of and parallel with the crank shaft, means forcommunicating motion from said crank-shaft to one section of saiddivided shaft in either direction, means for communicating motion fromsaid section of said divided shaft to the front tractionwheel, means forcommunicating motion from the other section of said divided shaft to the-rear traction-wheels, and a clutch coupling the sections of saiddivided shaft togethen. 5. Ina self-propelled vehicle, the combinationof a front traction-wheel, a front trac tion-wheel frame supportedthereon, a circle within which .the traction-wheel frame' is located,pivotal connections between the front and rearportions of thetraction-wheel frame and .the adjacent portions of .said circle,guide-connections between the traction-wheel frame and said circle,permitting oscillation of the traction-wheel frame, a

Inain frame haying-its front end supported on saidcircle, ,rear wheelssupporting the rear portion of the mainframe, and a motor W geareddosaid wheels.

6. In; a self-pro elled vehicle, thecombination of a pair 0 fronttraction-wheels, an

axle upon which-said wheels are journaled, a wheel-frame supported onsaid axle, a circle,,pivotal1yjoined to the front and rear 3. In aself-propelled vehicle, the combination; of a front wheel, a circlesupportedby said circle adapted to actuate said lever H ame, a motorsupplied with acrank-shaft, a divided shaft.

' portions of said wheel-frame, bearings carried by said circle in whichthe end-portions of said axle may move to permit oscillation of saidwheel-frame, a main frame having its frontend supported on said circle,steermg-mechanism connected with said circle, rear wheels supporting therear portion of the main frame, and a motor mounted on standard andgeared to said wheels, a main frame having its front end supported on.said circle, steering-means connected with the circle, rear wheelssupporting the rear portion of the main frame, and a motor mounted onthe "mainframe and geared to said rear wheels and to said verticalshaft.

8. In a self-propelled vehicle, the combi- .1 nation of a pair of fronttraction-wheels, a traction-Wheel frame sup orted thereon, acircle,'pivotal connections hetween said traction-wheel frame and saidcircle, springs oonfined between said circle and tractionwheel frame andtending to resist the oscillation of the traction-wheel frame, a mamframe having its front end supported on said circle, rear wheelssupporting the rear portion of themain frame, a motor, and means forcommunicating motion from the motor to the front andvrear wheels of themachine.

9. In aself-propelled vehicle, the comblnation of a pair of frontwheels, a wheelframesupportod thereon, a circle pivotally connected withthe front andrear portions ofsaid wheel frame, a main frame equlpped atits front portion with grooved rol ers engaging said circle,steering-mechanism connected with the circle, wheels supporting the rearportion of themain frame, and a motor geared to the front and rearwheels of the machine.

10. In a self-pro elled vehicle the COIIlblnation of a'pair 0 fronttraction-wheels, a circle supported through the medium thereof, a mamframe having its front end sup: ported on said circle,steering-mechanism connected with said circle, wheels supporting therear portion of said main frame, a motor cared to the fronttraction-wheels, means or communicating motion from the motor to therear traction-wheels, including a clutch, cams carried by the front andrear portions of said circle, and'clutch-retractmg means adapted to beactuated by said cams.

' 11. In aself-propelled Vehicle, the combination of a pair of fronttract1on wheels, a circle supported throughthe medium thereof, avertical shaft co-axial with said circle and geared to the front wheels,a main frame having its front end supported on said circle, wheelssupporting the rear portion of the main frame ,avertical shaftjournaledin the main frame adjacent to said tical shaft, a transverse shaftgeared to said rear wheels, a divided shaft having one section geared tosaid second-named vertical shaft and the other.section geared to saidtransverse shaft, and a motor geared to said divided shaft.

12. In a self-propelled vehicle, the combination ,of a pair of fronttraction-wheels, an axle onwhich said wheels are journaled,

. a wheel-frame supported by said axle, a circle surrounding saidwheel-frame, bearings between the, end portions of said axle and saidcircle permitting oscillation of the wheel-frame, springs located atsaid bearings tending to limit the oscillation of the wheel-frame, amain franre having its front end supported on said circle,steering-mechanism connected with said circle, rear wheels supportingthe rear portion of the main frame, and a motor geared to the front andrear wheels of the machine.

13. In a self-propelled vehicle, the combination of a pair of fronttraction-wheels, a wheel-frame supported thereon, a circle pivotallyconnected with the front and rear portions of said wheel-frame, alongitudinal shaft co-axia] with the axis of oscillation of saidwheel-frame and geared to said front wheels, a standard surmounting andrigidly carried by said circle, a verticalshaft co? axial with thecircle, journaled in said standard and geared to said longitudinalshaft, :1 main frame having its front end supported on said circle,wheels supporting the rear portion'of the main frame, and a motormounted on the main frame and geared to said vertical shaft and to therear wheels of the machine.

14. In a self-propelled vehicle, the combi nation of a pair of fronttraction-wheels, a pair of rear traction-wheels, a circle supportedthrough the medium of the front t'action-wheels, a main frame having itsfront end supported on said circle and its rear end supported by thereartractionwheels, a motor geared to the front and reartraction-wheels, and additional ungeared supporting wheels for themachine, said last-named wheels co-axial with one of said pairs ofwheels.

15. In a self-propelled vehicle, the combination of a pair of fronttraction-wheels, a circle supported through the medium thereof, a mainframe having its front end supceases ported on said circle, reartraction-wheels supporting the rear portion of the main frame, a motorgeared to the front and rear tract1on-wheels, 'and additional supportingwheels co-axial with the rear tractionwheels. circle and geared to saidfirst-named ver- 16. In a selfpr opelled vehicle, the combination of apair of front traction-wheels, a circle supported through the mediumthereof, a main frame hav ng its front end supportedon said circle, reartraction-wheels supporting the rear portion of the main frame,a motorgeared to the front and rear traction-wheels, and additional supportingwheels co-axial with said front tractionwheels.

17. In a self-propelled vehicle, the combination of a frame havingside-members pro vided with wheel-receiving channels at their rearportions and with removable outer sections at said channels, wheelslocated in said channels, spindles connected with the sidemcmbers of theframe and the removable sections thereof, said wheels being journalcdupon said spindles, and a motor geared to said wheels.

18. In a self-propelled vehicle, the combination of a main frame havingchannelform side-members with the bottoms of the channels cut away attheir rear portions, wheels extending through said side-members at thecut-away portions and pivotally connected with said side-members,springs supported in the channel-form side-members, a removableload-platform supported on said springs, and a motor geared to saidwheels.

19. In a self-propelled vehicle the combination of a pair of frontwheels, a circle supported through the medium thereof, a mum framehaving its front end supported on said circle and having a raisedseat-platform above said-circle, wheels supporting the rear portion ofthe main frame, a loadplatform supported above the rear portion of saidmain frame, a motor disposed beneath said load-platform and supported onsaid main frame, a vertical shaft co-axial with said circle and havingits lower end geared to said front. wheels, a vertical shaft journaledon the main frame outside said circle and havin its upper endextendingto the plane 0 said seat-platform and geared tothe upper end of saidfirst-named vertical shaft, and means for communicating motion from saidmotor to the lower portion of said second-named vertical shaft.

JESSE W. SUNDERLAND.

In presence of- R, A. SGHAEFER,

W. T. J ONES.

